I've had my M8 for about 2 years. Last week the operation of the thumbwheel became intermittant. Sometimes I turn it and nothing happens, and other times I turn it and it will cause a jump through 4 or 5 menu items. It is essentially useless.
Anyone have any suggestions? If there is a simple fix or a way to remove it and clean whatever mechanism is underneath it, I would much rather do that than send it in for repair.
Tom in California